Wapping's (World's) Smallest Bollards..?

We are back at Wapping and who would have thought we may well have found that Wapping's bollards might just be the smallest in the World ?

These bollards are so small you could be excused for mistaking them for pepper pots/grinders. You're probably wondering why they exist and the clue is yet again no stepped kerb but tarmac level with the pavement/kerbside.

Has anybody seen or found a bollard (an actual bollard) smaller than these ? If not Wapping has London, the UK's and maybe the World's smallest bollards.